Tire-valve.



SCHWEINERT,

MAXIMILIAN CHARLES SCHWEINEET, WEST H030, f-

. RIDG-EWOQD, NEW JERSEY.

TERE-VMM.

To all whom z't may concern:

Be it known that we, MAXIMILIAN CHARLES of West Hoboken, in the county of Hudson and State of New Jersey, and HENRY P. KRAFT, of Ridgewood, in the county of Bergen and State of New Jersey, both citizens of the United States of America, have invented certain new and useful Improvements in Tire-Valves, of which the following is a specification.

. This invention relates to tire valves and aims to provide certain improvements therein. j

ln the use of so-called demountable rims,

that is to say, rims which are constructed of metal and are adapted to be detachably secured in place on the felly of the wheel,

it is customary to use a short valve which projects but little beyond the inner face of the rim, in order to facilitate the operations of mounting and demounting the rim. Nevertheless when the rim is in place on the wheel it is desirable to have a portion of the valve projecting through the wooden felly in order that the tire may be pumped, during running.

The object of the present invention is to provide a two-part valve, one part of which constitutes the short valve hereinbefore reerred to and the other part of which is an extension adapted to be connected with the short valve with a leak-ti ht joint. By this means the tire can be inated when in place upon the wheel. An important feature of the invention is the provision of means whereby the tire can be deflated under likeconditions, and also by means of which aA gage can be applied to the valve when the tire is in place upon the wheel to determine pressures within the tire. The invention includes certain other features of improvement. which will be hereinafter more fully described.

lReferring `to the drawings which illustrate several embodiments of 'the invention,-

Figure l is a central vertical section partly in elevation, showing the preferred form of oui invention.

Fig. 2 is a similarsection of a modified construction.

Referring vto the drawings, let A illustrate a valve of the type hereinbefore re.

ferred to. The valve A comprises a shell B having the usual foot at its bottom and Serial No. 46,639.

screw-threaded to the inner tube of the tire. rlhe shell B is formed with a valve chamber C within which operates a valve member D connected to a pin E which extends upwardly Yto a point near the top of a valve plug F, these parts constituting the usual well-known Schrader valve. rlhe shell B is formed at its upper part with an enlarged recess@ into which projects a portion H of the casing B which is threaded to receive the plug F.

rlhe extension as a whole is indicated by the letter J and comprises a shell member K, the lower part of which is adapted to extend into the recess G and is' formed with a flange L. The upper part of the shell is formed with the usual screw-threaded eX- terior M designed to receive a valve cap Means are provided for maln'ng a tight joint between the shell K and the casing B in such manner as to avoid relative rotation of the packing() which is between the shell K and the casing. In the construction shown this means comprises a sleeve P closely surrounding the shell K and adapted to make a screw-threaded ,engagement with the walls of the casing B. Between the lower end of the shell B. and the packing O is interposed an anti-friction washer R so that when the extension is appliedv to thevalve casing it is only necessary to screw the sleeve P into the casing, thus squeezing the packing into the position shown wherein yit makes a tight joint between the tate this'operation the sleeve is provided at its upper or tion Within the shell K we mount a rod T, the lower end of which is adapted to engage the pin E of the valve D, and the upper end of which extendsv to a point close tothe top of the shell K. The rod T is adapted to be used for the purpose of pressin down the valve D whereby the tire may ne deflated while it is on the wheel. The rod T also serves the important function of enabling the use of the ordinarytire gage in connection with demountable tires. Such gages are provided with an abutment or pin which in the case of the ordinary valve contacts directly with the valve stem and opens the tire valve. In the type of valve shown, however, the valve stem is Patented Jan. il, 1m80 interposed casing and the shell. To faciliouter end with a knurled porinaccessible and the the shell K; this `is preferably `done by` swaging the rod at its bottom andtop, as

rod T serves asa connecting medium by means ofprwhich the valve may be opened. Aiurther importa t function of the rod'll is for use in, connection with i'nlatiol/io tires from storage tanks or reservoirs. lin this operation it is usual to provide a coupling piece which manually depresses the valve so as to avoid the necessity Aof overcoming the valve spring with the air under pressure. According to the present., invention the rod T is irremovably coupled to shown at U U', so that'tlie diameters of the swaged portions are larger than .the bore of the shell whereby the rod is prevented from escape. The invention also provides a construction in which the sleeve P is coupled to the shell K so that separation oi these parts is prevented. The llange L serves the purpose the present construction of preventing the removal o the sleeve/in one direction while its removal in 'another directionis prevented by a collar V which is shown as screwed down orei the upper end of the shell. Preferably` the collan V is jammed in place so that'` it is not easrly removable.

In the construction'shown invFig. 2 the invention is adapted toa type of valve m which the valve shell is turned at an angle to its foot. This type of valve 'which is used in connection with tires of special construction cannot ordinarily have a. sufficient degree of projection rom the rim to render it accessible for use withA a gage. The invention may be applied to this type'in the manner illustrated wherein the shell K is screw into the end of the valve casing B', while the rod =T is located as before within the shell and is` adapted to contact with the upper end ofthe valve .stem E. In the present instance the use of `the sleeve S is omitted, so that the shell corresponds in diameter to that of the casing. In this instance the packing R is located directly between the shell Aand the valve casing.

While we have shown and described several embodiments of the invention it will be understood that we do not wish to'be limited thereto Since various changes can be made therein without departing from the invention. A

What we claim is l., In a tire valv'e or thc like, the combination oi a valve casing comprising ltwo parts. one of which is connected to the inner tube and the other of which forms an extension of the lirst, and has a passage for leading air to said other part which is connected to the air-tube, means for detachably coupling the two' parts together, a .valve proper 1n the lower part having a stem shorter 'the valve casing, and a rod meanest within said'extension adapted to contact at its lower end with said valve proper where- 'by to'open the same.

2. ln a tire valve or the like, the combination of a valve casing comprising two parts, one of which is connected tothe inner tulle and the other of which forms an extension of the rst, and has a passage for leading air to 'said other part which is connected to the air-tube, means for detachably `coupling the two parts together, a valve proper in the lower part having a stem shorter than the valve casing, a rod within said extension adapted to contact at its lower end with said valve proper whereby to open the same, and means for coupling said rod to said e'xtension whereby to prevent separation thereof.

3. In a tire valve or the like, the combi- Y nation of a valve casing comprising two parts, one -of which is connected to the inner tube and the other of which forms an extension of the irst, and has a passage for leading air to said other part which is connected to the air-tube, means for detachably coupling the two parts together, a valve proper in the lower part having a stem shorter than the valve casing, a rod within said extension adapted to contact at its lower end with said valve proper whereby to open the same, and means for irremovably coupling said rod to said extension whereby to prevent separation thereof. a v

4. In a tire valve or the like, the combination of a valve casing comprising two parts, one of which is connected to the inner tube and the other of which forms an extension ofthe first, means for detachably coupling the two parts together, a valve proper in the lower part, a rod Within said extension adapted to contact at its lower end with said valve proper whereby to open the same, means for irremovably coupling said rod to said extension whereby to prevent separation thereof, and a sleeve surrounding seid extension and adapted to screw in the lower of said parts.

5. In a tire valve or the like, the combination of a valve casing comprising two parts, one of which is connected to the inner tube and the other of which forms an extension of the first, means for detachably couplmg the two parts together, a valve proper 1n the lower part, a rod within said extension adapted to contact at its lowerl 1,251,585 3' parts, one of which is connected to the inner a liange at its lower end, a packing above tube and the other of which forms -an ex- 'said flange, and a sleeve screwing into said tension of the irst, said extension being in.l recess and compressing said packing, and a line with said first partland having an inrod .in said shell adapted to engage said 30 5 Hating nipple at itsftop, a valve proper in valve proper when the parts are connected., said lower part, and a4 rod within said eX- 9. In a tire valve or the like, the combiv tension detached from and adapted to connation of a valve casing comprising two tact at its lower end with saidA valve proper parts, one of which is connected tothe inner and having its upper end extended to said p tube and the other of which forms an exten- 35A 10/ nipple. v sion of the first, and has a passage for lead- -7. In a tire valve or the like, the vcombiing air to said other part which is connected nation of a valve casing comprising two to the air-tube, means for detachably couparts, one a short part adaptedto be faspling'the two parts together, a valve proper .tened to the inner tube and containing a in the lower part, having a stem shorter 40` 15 valve piroper, and the other being an extenthan the valve casing, and a loosely-held rod sion adpted to pass through4 the felly and within said extension adapted tocontact at being connected to said first part, a pump vits lower end with said valve stem whereby nipple at the end of said extension, and a to open said valve proper. f rod passing through said extension detached In witness whereof we.- have hereunto 45 2o from said valve proper and contacting at its signed our names in the presence of two lower end with said valve proper and havsubscribing witnesses.

ing its upper end lying within said nipple. MAXIMILIAN CHARLES SGHWEINERT. In a tire valve or the like, the combi- MERY l. T. l nation of a valve casing, said valve casing Witnesses: 25 having a recess, a valve proper therein, a GRACE GUNDERMAN,

shell adapted to enter said Arecess and having FRED WHITE. 

